Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ahlstroem OyfiledCriticalAhlstroem Oy
Priority to FI247774ApriorityCriticalpatent/FI54871C/fi
Publication of FI247774ApublicationCriticalpatent/FI247774A/fi
Publication of FI54871BpublicationCriticalpatent/FI54871B/fi
Application grantedgrantedCritical
Publication of FI54871CpublicationCriticalpatent/FI54871C/fi